What is the benefit of UMI's Roto-Joint technology?

The Roto-Joints allow for up to 28 degrees of unrestricted movement, preventing suspension binding. This leads to improved handling, a more comfortable ride, and better articulation compared to standard rubber or polyurethane bushings.

Do these control arms come with all necessary hardware for installation?

These control arms are designed to be a direct bolt-on replacement and utilize your vehicle's original hardware for installation. They come fully assembled with the Roto-Joints installed.

How do these control arms help with performance driving?

The bind-free articulation provided by the Roto-Joints allows the suspension to work correctly during high-handling situations like auto-cross or road racing. This helps improve cornering, track consistency, and can minimize wheel hop.

UMI Performance 64-67 A-Body Non Adjustable Upper Control Arms- w/ Roto-Joint

Specifications

Brand: UMI Performance
Part #: 4044-B
UPC: 4044-B

UMI Performance 64-67 A-Body Non Adjustable Upper Control Arms- w/ Roto-Joint

Name: UMI Performance 64-67 A-Body Non Adjustable Upper Control Arms- w/ Roto-Joint
Brand: UMI Performance
Price: 250.23 USD
Availability: InStock

$250.23

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UMI Performance upper control arms with Roto-Joints for 1964-1972 GM A-Body. Improves handling and ride quality with bind-free articulation.

Key Features

Fits 1964-1972 GM A-Body vehicles including Buick Skylark, Chevrolet Chevelle, and Pontiac GTO.
Features UMI's Roto-Joint technology with a greaseable Delrin race for 28 degrees of bind-free articulation.
Constructed from 1.500" x 0.120" DOM mild steel tubing for strength and durability.
Mounting plates are CNC machined from 0.250" thick mild steel for precision fitment.
Designed to minimize wheel hop and improve cornering and track consistency.
Direct bolt-on replacement utilizing OEM hardware.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

UMI Performance is known for making well-built suspension components that improve handling and durability. These non-adjustable upper control arms are designed for a range of classic GM A-Body vehicles, including models like the Chevrolet Chevelle, Pontiac GTO, and Buick Skylark from the mid-60s to early-70s. They replace your factory arms to offer a bind-free performance and a more comfortable ride, even when you're pushing the car hard.

What sets these arms apart is UMI's Roto-Joint technology. This system uses a pivot ball with a greaseable Delrin race, allowing for up to 28 degrees of unrestricted movement. This means your suspension can articulate properly without binding, which is a common issue with stock rubber or aftermarket polyurethane bushings. The Delrin race also helps absorb shocks and road noise, contributing to a quiet and smooth operation on both the street and the track. Constructed from strong 1.500" x 0.120" DOM tubing and featuring thick, CNC-machined mounting plates, these control arms are built to last and are a direct bolt-on replacement designed to minimize wheel hop and improve cornering consistency.

These control arms come fully assembled with the Roto-Joints installed, ready for immediate installation using your vehicle's original hardware. They feature a durable powder coat finish for added protection and a great look.